11784671409 has 16 divisors (see below), whose sum is σ = 17960389632. Its totient is φ = 6733049808.

The previous prime is 11784671401. The next prime is 11784671411. The reversal of 11784671409 is 90417648711.

It is not a de Polignac number, because 11784671409 - 2³ = 11784671401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11784671401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106462 + ... + 186824.

It is an arithmetic number, because the mean of its divisors is an integer number (1122524352).

Almost surely, 2^11784671409 is an apocalyptic number.

It is an amenable number.

11784671409 is a deficient number, since it is larger than the sum of its proper divisors (6175718223).

11784671409 is an equidigital number, since it uses as much as digits as its factorization.

11784671409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87356.

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 11784671409 in words is "eleven billion, seven hundred eighty-four million, six hundred seventy-one thousand, four hundred nine".